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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    
    <!-- 第一：下载、导入 Vue 框架的 JS 文件 -->
    <script src="js/vue.js"></script>
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<body>
    
    <script>
        let arr = ["AA","BB","CC","DD"] ;

        console.log(arr);

        // 向数组添加新的元素
        arr.push("EE") ;
        
        console.log(arr);



    </script>
    
</body>
</html>